Submarine boat



SUBMAR I NE BOAT Filed Feb. 28, 1928 'INVENTOR Malachi HJimpsOrz ATTORNEY Patented Apr. 9, 1

MALACHI H. SIMPSON, OF WATERBURY, CONNECTICUT.

Application filed February 28, 1928.

This invention relates to boats, and more particularly to a submarine means for permitting easily raised to the su SUBMARIN E BOAT.

boat having it to be quickly and rface of the water in 5 case of an accidental sinking.

A further object is this nature which will to provide a boat of be simple in construction, inexpensive to manufacture, easy to manipulate, and very efliclent and durable in use. With these and other ob ects 1n view there has been illustrated drawing, one form in on the accompanying which the invention may be conveniently embodied in practice.

Fig. 1 represents a s1de view of a sunken submarine boat resting in the mud upon the bottom of the ocean.

Fig. 2 is a transverse sectional view of the submarine boat showin in open position and a tron.

g one of its trap doors nother in closed posl- Fig. 3 is a sectional view of one of the transverse wells taken along theline 33 of scope 12.

In order to permit a liftingcable 13 to be securely attached to the boat in case it should accidentally sink to the bottom 13 provision is made of a pair of hollow wells 14,

preferably which pass transversel a sutlicientheight abo rectangular in cross-section, y through the boat at ve the keel when the boat is in an upright position to prevent mud rom entering them.

The wells 14 are provided at their ends with annular flanges 15 welded or otherwise secured to the mslde of the hull 10. The op en ends of the wells 14:

are adapted to be closed by means of swinging trap doors 16 secured to the hull on pivots 17.

In order to detachably lock the trap doors in closed position (as shown atthe left in Fig. 2) provision is made of rotatable looking members 18 loosely pivoted on pins 19 attached to the hull ab In salvaging a boat ove said trap doors.

having the invention Serial No. 257,607.

installed thereon, if the craft lies on an even keel, it will only be necessary for a diver to open the trap doors on both sides of the hull and pass the ends of the lifting cables 13 through both of the wells 14, whereupon the boat may be easily raised by means of lighters (not shown) floating upon the surface above.

If, however, the vessel should tip over upon its side so that the trap doors on one side of the hull lie on the bottom or in deep mud and cannot be opened, each well is provided near its center with a forwardly extending bolt 20 headed over at its ends 21 upon a pair of metal bars 22 located fore and aft of said well, said bars being secured to said wells as by rivets 23. Under these conditions it will only be necessary for the diver to open the uppermost accessible trap doors and to pass the cables 13 around the headed bolts 20 and out at the same end of the well, whereupon the lifting operation will be the same as above described. If desired, instead of pass ing the cable around the headed bolt, a hook may be provided on the end of the cable for engaging said bolt.

In order to protect the wells 14 from injury in case of collisions etc., provision is made of a pair of transverse reinforcing armor plates 24 and 25 having tapered side edges, said plates being located below the wells 14 and being welded or otherwise secured in contact with the inside of the hull.

One advantage of the invention is that when installed upon boat, the craft need not be lying upon an even keel, but may be raised even though it has turned over upon its side.

lVhile there has been disclosed in this specification one form in which the invention may be embodied, it is to be understood that this form is shown for the purpose of illustration only, and that the invention is not to be limited to the specific disclosure but may be modified and embodied in various other forms without departing from its spirit. In short, the invention includes all the modifications and embodiments coming within the scope of the following claim.

Having thus fully described the invention,

What is claimed as new, and for which it is desired to secure Letters Patent, is:

In a submarine boat, a hull, a transverse Well extending through said hull and being of sufficient diameter to form a Working chamber for a diver, a cable-attaching rod passing longitudinally through said Well at the center thereof and a pair of doors for closing the ends of said Well and permitting access to said rod at all times even when 10 said hull is embedded in mud or one of said doors is lying directly upon the bottom.

In testimony whereof, I have aiiiXed my signature to this specification.

MALACHVI H. SIMPSON. 

